1
general::
Phrase(s): think better of something
to reconsider doing something and end up not doing it. • I hope that you will think better of what you are doing and how many people you are hurting. • I will think better of making such a careless remark next time., Phrase(s): think better of someone or something
to raise one’s opinion of someone or something. • I think better of him since I saw how well he does in the sales meetings. • I hope that you will think better of the plan now.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Reconsider, change one's mind about, as in I hope you'll think better of it before you quit your job. [c. 1600]
American Heritage Idioms